Halogen Oxidation Reactions of (C<sub>5</sub>Ph<sub>5</sub>)Cr(CO)<sub>3</sub> and Lewis Base Addition to [(C<sub>5</sub>Ph<sub>5</sub>)Cr(μ-X)X]<sub>2</sub>: Electrochemical, Magnetic, and Raman Spectroscopic Characterization of [(C<sub>5</sub>Ph<sub>5</sub>)CrX<sub>2</sub>]<sub>2</sub> and (C<sub>5</sub>Ph<sub>5</sub>)CrX<sub>2</sub>(THF) (X = Cl, Br, I) and X-ray Crystal Structure of [(C<sub>5</sub>Ph<sub>5</sub>)Cr(μ-Cl)Cl]<sub>2</sub>
作者:Marc A. Hutton、James C. Durham、Robert W. Grady、Brett E. Harris、Carter S. Jarrell、J. Matthew Mooney、Michael P. Castellani、Arnold L. Rheingold、Ulrich Kölle、Brenda J. Korte、Roger D. Sommer、Gordon T. Yee、J. Matthew Boggess、Roman S. Czernuszewicz
DOI:10.1021/om000653o
日期:2001.2.1
The 17-electron complex (C5Ph5)Cr(CO)3 reacts with halogens (C6H5I·Cl2, Br2, and I2) in C6H6 to yield the dimeric oxidation products [(C5Ph5)Cr(μ-X)X]2 as thermally stable solids. Reactions with other chlorinating agents similarly yield [(C5Ph5)CrCl2]2. An X-ray crystal structure of [(C5Ph5)Cr(μ-Cl)Cl]2 was obtained. The magnetic properties of the Cl2-bridged dimer have been determined and modeled
17-电子络合物(C 5博士5)的Cr(CO)3种发生反应与卤素(C 6 H ^ 5 I·氯2,溴2和I 2)使用C 6 H ^ 6,得到二聚氧化产物[(C 5 Ph 5)Cr(μ-X)X] 2为热稳定固体。与其他氯化剂的反应类似地产生[(C 5 Ph 5)CrCl 2 ] 2。[(C 5 Ph 5)Cr(μ-Cl)Cl] 2的X射线晶体结构获得了。的Cl组成的磁特性2 -bridged二聚体已被确定和建模使用通常的各向同性哈密顿ħ = -2 Ĵ S ^ 1 · S ^ 2,其产生J / K = -30 K.低温(77K)的拉曼光谱固体[(C 5 Ph 5)CrX 2 ] 2(X = Cl,I)的定义允许对低频区域(<600 cm - 1)中的金属环和金属卤素拉伸模式进行分配。四氢呋喃(THF)裂解这些二聚体以生成(C 5 Ph 5)CrX 2形式的络合物(THF)。
Reduction–oxidation properties of organotransition-metal complexes. Part 23. Pentaphenylcyclopentadienyl carbonyl complexes of cobalt and rhodium
作者:Neil G. Connelly、Stephen J. Raven
DOI:10.1039/dt9860001613
日期:——
catalytic in the oxidant. The complexes (2) are also prepared via(a) the substitution of [RhBr(CO)2(η-C5Ph5)][ZnCl3] with PPh3 or AsPh3 and subsequent reduction by [N(PPh3)2][Mn(CO)5], (b)[Co(η-C5H5)2] reduction of [MI2(CO)(η-C5Ph5)](3, M = Co) in the presence of P(OMe)3 or P(OPh)3, or (c)[Co(η-C5H5)2] reduction of [RhBr2P(OMe)3}(η-C5Ph5)](5) in the presence of CO. Complexes (3, M = Co or Rh) are prepared
Functionally substituted derivatives of (η5-cyclopentadienyl)triisopropoxytitanium and (η5-cyclopentadienyl)trichlorotitanium
作者:Scot Barry、Andreas Kucht、Homa Kucht、Marvin D. Rausch
DOI:10.1016/0022-328x(94)05160-d
日期:1995.3
(η5-pentaphenylcyclopentadienyl)titanium trichloride (6) in quantitative yield. (η5-N,N-Dimethylaminocyclopentadienyl)titanium trichloride is produced in 54% yield from a reaction between equimolar amounts of (C5H4NMe2)Li and titaniumtetrachloride in pentane solution. A reaction between titaniumtetrachloride and carbomethoxytrimethylsilycyclopentadiene, formed from (C5H4CO2Me)Na and C1SiMe3, products